Driveline vibration Tsb out

Yeah, toyota needs to fix it, but by the time they do everyone will be out of the 36k mile warranty Like myself haha. But really, it is annoying, but after 2 years of looking at that fucking TPMS light and the vibration I've blocked it out in my brain. (I have a new vibration, wheel bearing )

Along with my other truck and the 7 lights on at all times, I don't even notice anymore.

Our work trucks (2011 F-150) do not vibrate at all. Smooth sailing all the way to the max speed

 

I still believe it is purely in the driveline angle, and it is a combo of angle problems. I measured a 3.3 deg working angle (angle of the trans/transf case flange minus the angle of the first half of the driveshaft) at the u joint off the trans/transfer. According to Spicer, they do not like anything over 3.0 deg., and actually prefer the working angle at the rear of the trans to be more between 1-2 deg. max. Additionally, the u joint angle at the trans and pinion need to be close to each other. Right now they are about 1 degree apart. The more difficult issue is to get a smaller working angle at the trans u joint. If you drop the trans mount height further, this causes another issue with engine mounts, engine/trans angle, and fluid levels for internal bearings) Don't know what happens if you raise (not drop) the height of the carrier bearing (to reduce the working angle of the front u joint) and then match the pinion angle to the trans angle. I don't know if flipping the carrier bearing raises it enough. The only other choice seems to be a different crossmember- no easy task. Spicer plugged my numbers for all angles, along with the driveshaft front and rear half measurements into their torsional vibration program. Statically, the setup is just within limits, but as soon as the pinion moves, is goes outside the acceptable limits.

 

Cock suckers at HQs!!!! They piss me off by releasing this and even more by not releasing a Tundra 2014 in diesel flavor. shit!

 

... ^ ^ ^ ... Bingo ... Great theory and you might be right ... I used to be the the emergency equipment (fire trucks & speciality vehicles) and military equipment business. Spicer and Dana were always on our engineering dept about drive line angles and angles of approach & departure and lastly PTO mounted goodies like wenches & generators.

Perhaps ... you need to talk to Toyota and give them some ideas ... ...
I have given them my ideas on another issue a long time ago and they made a small change due to liability.
.

 

I drop my truck off tomorrow for the tech to "test drive." I'm starting to wonder if I want to do that or not. I've heard the TSB has, at best, reduced the vibrations, but not eliminated them, and at worst made the vibrations worse. I don't know what to do!

 

The worst you can do is "waste" time at the stealership. IF you can, stay with the tech and go along for the drive.

 

I'm thinking about doing just that, the problem is I don't have all the time in the world, so I'd like to be able to grab the tech, go for a 5 minute spin, and then head out.

 

... ^^^ ... Some dealers will not allow you to ride with the tech ...
.

 

And those are the shitty dealers I avoid.

 

Has anyone with a full OME lift had the new transmission mount and steering wheel damper installed per the driveline vibration TSB? Curious to see as I still have small take off vibes. Or the steering shaft TSB for the shaky/loose steering?

 

Any update on the 'drive shaft tsb'?

 

Spoke w/my friend who works for toyota in Torrance and he said the issue is driveline angle related plus the inherent nature of a leaf spring suspension to rotate when torque is applied through the pinion.
He said alot of people flip the carrier bearing around and it helps or eliminates the issue for them.

 

Yesterday the dealership called and said they had the new driveshaft in and it helped a lot with the vibration, but they were not happy with it so they opened a case with toyota on there own... he wanted to keep the truck longer because the manager of the service department wants it fixed... I hope there is something that can be done. The service manager said it was the worst vibration out of any Tacoma he has driven. I think if they were able to have done the driveshaft first and not the suspension tsb, it probably would have fixed it. As soon as I know more about what will be done ill post. Im just happy the dealer cares enough to help fix my truck. They could have sent me on my way without it being fixed.

 

I've been watching several of these vibration threads since my 2012 DCSB TRD Off Road 4wd is doing it also. Mine is from a dead stop or very slow roll, accelerating from 10-20mph. Pretty much identical to what most others are experiencing. Talked to dealer, they said YES, there is a TSB on that. So picked up my truck with the new springs (still three leaf style) and new transmission mount. They said the technician noted that it fixed my low speed vibration when accelerating. Well, it is now worse than before. The head guy went for a ride and felt it too. We then drove a brand new 2013 and felt the exact same vibration. I wasn't surprised based on this thread and the fact that I had driven another 2013 and also experienced this same vibration (3 for 3). So they've been nice and all, but they say they are done since the brand new one also vibrates. Well that doesn't make it right. So now I guess I'll start shimming the carrier bearing and searching myself. My case has been made, my concerns noted. I SHOULD be covered if they figure this out after my warranty runs out. But I may call Toyota to express my concern in the mean time. My problem is now worse, it should be fixed. Do I burn a bridge with my local dealership? Probably not at this time, plus the guys were cool about it for the most part other than not pursuing my concerns any further. Oh by the way, I also got the wind noise TSB done at the same time. Its worse now too, go figure.

 

Another one here who got the TSB done and just had a reduction in the vibrations (for the time being at least).

Fix the real problem? Nah that costs money.

FTS is taking my truck soon to take a stab at the loose steering (spoiler alert: nothing will happen), I'll add this too.

 

I dropped mine off on Tuesday to be test driven by a tech. The tech confirmed the vibrations and all of the TSB parts have been ordered. I told the service manager that I knew he was "supposed" to do the TSB one step at a time, but I had no intentions of dropping my truck off at the dealership on three separate occasions, so if they must do it in 3 steps, keep the truck for a day and have the tech confirm the vibrations haven't disappeared after each step. I also told him that I don't really have any expectations of this TSB to actually fix my vibrations from what I've read on the internet, but I want it documented that I've been chasing this down since the truck had 800 miles on it.

I am, however, slightly hesitant to let them do the TSB as I keep hearing that the TSB actually makes the vibrations worse! Thoughts?

I'm also wondering if I pressure hard enough, would they just get me a 1 piece drive shaft to save everyone time/money/hassle? They amount of money they'll spend on the TSB parts and the tech's time, they could have just swapped out my drive shaft...

 

Back Monday for leaf springs see how this goes.

 

Just in this morning. Rode with the tech and he felt it. Said he felt other trucks do it but will "try" to figure it out. I know it's there. Been there since brand new. Doesn't bother me too much but want to see if they can lessen it before I lift it...

 

I hate to say this, but Toyota is not going to be able to fix this. If they could it would already be done. Ive got new springs, transmission mount, steering dampener, carrier bearing and the redesigned TSB drive shaft in my truck... and guess what. Still vibrating! The engineers are obviously clueless about how to really correct this and since its not life threatening i dont think they ever will. Good thing there are some pretty smart folks here on TW. If you dont plan to buy yourself a one piece drive shaft, you are most likely going to have to adjust the driveline angle on your own. if you lift it you will probably have to do it also. If you havent seen this thread, you may want to research it a bit. I will be doing this myself and after Im done, Ill report if I was able to get it fixed. http://www.tacomaworld.com/forum/2nd-gen-tacomas/244535-drive-shaft-vibrations-solved-step-step.html

 

Just got a call from the dealer, they have thrown all three TSB parts in it and no fix, they escalated to Toyota and they are having them measure driveline parts. The service tech said Toyota suspects it may be coming from the transmission and may throw one in there. yikes... In any case they asked for my truck for a while so I left it with them hopefully to have Toyota come out, inspect it and find a way to fix it for all of us getting the shakes.